Question 1

Which of the following is NOT a primary function of the integumentary system?

Accepted Answer

Blood cell formation

Question 2

A patient presents with a skin lesion that is asymmetrical, has irregular borders, multiple colors, a diameter greater than 6 mm, and is evolving. According to the ABCDE rule, which type of skin cancer is most concerning?

Accepted Answer

Melanoma

Question 3

Which layer of the epidermis is responsible for cell division and regeneration?

Accepted Answer

Stratum basale (germinativum)

Question 4

Which accessory skin structure is primarily responsible for producing sebum?

Accepted Answer

Sebaceous glands

Question 5

A person with a deficiency in melanin production is likely to experience which of the following?

Accepted Answer

Increased risk of UV damage

Question 6

Which of the following best describes the difference between thick skin and thin skin?

Accepted Answer

Thick skin has five layers of epidermis and is found on the palms and soles

Question 7

Which layer of the dermis is responsible for forming fingerprints due to its projections into the epidermis?

Accepted Answer

Papillary layer

Question 8

A patient suffers a deep cut that penetrates through the epidermis and into the subcutaneous tissue. Which of the following best describes the subcutaneous tissue?

Accepted Answer

It is deep to the skin and provides insulation and energy storage

Question 9

Which of the following glands is responsible for producing earwax?

Accepted Answer

Ceruminous glands

Question 10

Which of the following is a function of nails?

Accepted Answer

Protection of the tips of fingers and toes

Question 11

A patient is unable to sense light touch on their skin. Which cell type in the epidermis is most likely affected?

Accepted Answer

Merkel cell

Question 12

Which of the following best explains how the skin contributes to excretion?

Accepted Answer

By releasing sweat that contains metabolic waste products

Question 13

If a person has a mutation that prevents the formation of the stratum lucidum, which area of the body would be most affected?

Accepted Answer

Palms and soles

Question 14

Which pigment is primarily responsible for the yellow-orange coloration of the skin?

Accepted Answer

Carotene

Question 15

A patient with a burn that destroys the epidermis and dermis but leaves the subcutaneous tissue intact will likely experience which of the following?

Accepted Answer

Loss of protection, sensation, and temperature regulation

Question 16

Which of the following equations best represents the relationship between skin surface area ($$A$$), sweat rate ($$S$$), and total excretion ($$E) $$over time $$t$$?

Accepted Answer

$$E = S 	imes t 	imes A$$

Question 17

Which of the following is a protective function provided by hair?

Accepted Answer

Prevention of mechanical injury to the scalp

Question 18

A patient with a genetic disorder affecting Langerhans cells in the epidermis would most likely have problems with which of the following?

Accepted Answer

Immune response in the skin

Question 19

Which of the following best describes the role of the reticular layer of the dermis?

Accepted Answer

Provides mechanical strength and elasticity due to dense irregular connective tissue

Question 20

A patient presents with a skin lesion that is symmetrical, has regular borders, is uniform in color, and has not changed in size over time. According to the ABCDE rule, what is the most likely diagnosis?

Accepted Answer

Benign nevus (mole)

Chapter 5: The Integumentary System – Structure, Function, and Clinical Impact

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